Du brauchst Ansic und Muzwi zwischen Objektiv und Multikilar.

ANSPI ~ 68mm plate on one end, M39 threads on the other, designed to go on the 250-xxx Pan-Tele-Kilar f4/300mm lens and the Sport-Fern-Kilar f5.6/600mm
ANSIC ~ M39 threads on one end, flat plate of 68mm on the other, designed to go on the 250-xxx Pan-Tele-Kilar f4/300mm lens and the Sport-Fern-Kilar f5.6/600mm
ANEXS ~ Diameter of lens end is about 68mm, for Exakta.

REALP ~ for ALPA
REZAR ~ for ARRIFLEX 16S cameras
REZWI ~ for Kilarscope reflex housings
REZWI ~ 14.5mm M39 extension
MUZWI ~ 14.5mm M39 extension, The only difference is that the REZWI has a rubber ring around the outside, and the MUZWI is all metal.
REZPA ~ for M42
RECIN ~ for C mount